Here is the full list of all 38 Eidolon achievements.
Romance in the Great Beyond!
Happily Ever After!
Caught in the Best Romance!
Together...Forever...
To Infinity and Beyond!
She Likes Your Stupid Face
Deleted
She Likes you for Some Dumb Reason
Best Friends 4EVA!!!!
We need to talk...
This is a human thing to do...
This calls for experimentation of a different sort!
Hello World!
Wanna be my lab partner?
That's not very scientific!
Meet the maker!
Reset Eidolon
Three's a Crowd
Liar, Liar
Making a difference!
There never was a narrator...
Social Justice Warriors Unite!
She cares more about your world...
Static
You are human...
As long as memory lingers...
Literary Ambitions
Read with me
Until you delete...
Improvement Achieved!
Sisters 4EVA!!!
Know Thyself
Taking Control
Two timing
#1 Power Couple!
Executive Material
Most likely to succeed!
Dislikes empowered women